Gas-meter.



il* le,

WILLII'AM` F. ETZEL, 0F LOWELL, MASSACHUSETTS.

Slgecfcetion of Letten ,Potent Patented April 2v, ieee.

Appiicaeoirieiee;emmene; ieee, comme. 459,016.

of. Lowell; in4 the county ol"v Middlesex sind;

i State ofi' Massachusetts, have invented: new end; useful; Improvements i inl Gesellileters, ofi Willichlthe follow-ing isefull; clear, endl exact description.

'lgheiinventionreletes to drg7 gas meters 1Q hevingiclternetely expanding endicontrect.-

- ingmeesiiringchembers, enditsobject'is to` provide,y certainl new, and useful improveirients. inE gas meters, vvhereloy` gas passes f reelv .throughfthe `ortsoltheslide valve sects `t t Hind (from i t e measuring chambers, thus .v reducing the decrease l ol' the l gas l pres-V sure, incident: to litsfowl, through the meter,

tix-@minimum The iliveiitici;lA consists. ofi novell features rigidi parte?, en dj; combinations o' thel seme,` vvliicl1- will: he* mcrcvfully describedi herein? after arid itlieipgoilited L20/llt.; iii :the claims.I

prficticli embodiment; off theinventicnn is" y represented.: im the cccompenyig a drew, ings forming e,7 )arti of this vspecicetienz, in. f

similari C "enchere cil` reference iiidi-l @etc corresponding Seite` eliche views.:

l.1"ligure.1A;SQil:t fvievzf of:the-ir.ii1proved= geef meter,V parte cmg 'broken lout; :ige` 2 is,

; e .sectionel spl'eiiw ot ithel sameon the line 212 of 3j and withX one of :the slicleA valves omitted and 4Eig Sizis` ezsectionel' side eleve-` tiorvof the., same. ol thee lille 3*#-31' et Eg'. 2, The casing;` 5A o he., dryfgee meterfis? dii-1 3.5 Wide@ lbyi-the ,ue rtitionf B time seperate;

compartments, each: conteinin f ai measuring v chember O Acaloeble. ot experi itc@` and coefk trectilg,in,` thel` usuel :mamen i The mecs-` uiiligl c embers@ C are eolmolectecl by; pipes 102 Dfwith; the. ports a, a., iny they valve seeleV -E,1 E, arragged. iin. `chechamber connected l i alpi @FG yviththefgcs-suply, sieindicated` 11i-the ravmgs, v Ecch 0f ft providcde Alnefiif egida, ofmwhic the l ges ouilQlJ spl-pe landet/hef ppllif :cio ens inte vthe; coro-r.especieille,` committment @o the CasingfAi' y Ollohci*velvejjseetsv 135,; cte-meente@ te e ValVeiseets-is.

ste 14: rcongectcdpitmcn; :J with; the;

E; driveni from@ the.` mcaeuriiigffehembere j @Cloche ucuelmcnneiri so that further de scripticnv of the connecting mechcnism loe'- twecn tlievshe't K end' the said meesuring chambers C, C is not deemed necessary.

By refel'enceto Figs. 1 and 2, it will be.. seen` that the line of movement of' the valves .shaft K, but the length cif the ports a, b and cineech valve seat ranges at an ecute an le relatively to the line lof movement of t e velvesl; Il, andthe corresponding ports a, a, b, b and c, c creinelinement with ee'ch other, asplainly indicated in Figs. 1 sind 2. Eachofvthe valves l, and its cavity l conform tothey shepe iven-to the ports 1,6 and c ofthe lcorresponfing valve sectll end'by errang ing the valve seeis E and the valves l in the klicencier described; exceedin` ly long ports ere `psz'mfide-d Within the-chem er F, to fellowy `freelovv` of'theeges through the ports, thus preventing decreese ofthe gee ressureincideiitl to the -flowof the `ges t roughthe lmeten ltiie understood thctiin gee meterse@ hereltofcce' constructed the perte in.` the valve sectsere @brig-lit angles: to the lille ofmove- ,mentof theslide valves butin myimproved ga-ccmeterthe ports int `e valve seats ere. er ranged at amecute amglerelative to the lirie` oa moverilent.4 ct# the valvesy and' consequently thelpxoiits provide lergerareas without occupying morespece in .the chamber F,

Having thus described my invention, I` :claim esnew and desire'. to securei by Lettere Patent:- y 1. Avdry ges mctcrlcomprising adifvided mein cesm l, expanding and contracting `mceesiiriiiff c embers inl 'tlicsaid mein casinfr,k atvelve-c einher-havingvelveseets, e cram c shaft,` mesme connecting the crank shaft with Athe measuring chambers whereby theexpensionlend contraction of sinlchembers will' .operetethe shaft, slideY valves reciprocating' om thcvelvesseets for Vcontrolling the paescge ot `the gcc .50` endfllrom the mecsuring chemibere.- connections; between the slidey valves-v and, :thiol creek? shaft `for o cretiinig; 'tliiel seme; theeenterlinesof"thelsei valves enclvelve cecile .loeingrcrrengedl transversely et ce ecute englei'eletive .to vthe lihecfy movement ci the seid-valve 2.; dygels meter' `provided Withlvelve icv sects, and reel rocatingfvelvee orccntfclf' 1mg; the How o A the gee through the meter,- thelopemngs in the seid valve" Seele end the eme@ l eavties in -the seid valves having their` length i valves and the corresponding valve seat tive y ran ng transversely at an acute angle reliaopenngs of the valve seats being in alinetive y to the ine of movement of the seid -ment. velves. o In testimony whereof I have signed my 15 3. A dry gas meter provided with valve name to this specification in the presence of lslestgheng recpreting elveshforl" eontrotwo subscribing witnesses.

'ngte owofte astrou tlemeter v 1 fn the openings in the sgeid valvegseats and theI HLLIM L' ETLL cavitles in the Said valves having their length 1 Witnesses: ran' ing transversely at an ecute angle rela- JOHN H. KELSEY,

th the ine of movement of the said SANFORD P. LEARY. 

